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tem'per•a•ture-hu•mid'i•ty in'dex

Pronunciation: (tem'pur-u-chur-hyOO-mid'i-tē or, often, -yOO-, -pru-, -pur-chur-, -choor"),[key]a number representing an estimate of the effect of temperature and moisture on humans, computed by multiplying the sum of dry-bulb and wet-bulb temperature readings by 0.4 and adding 15, with 65 assumed as the highest comfortable index. Abbr.: T.H.I. Cf. heat index.